Chinnammal C. Kandaswamy, M.D.
NPI 1346260817ActiveIndividual· Internal Medicine· Oak Lawn, IL
Internal Medicine (M.D.) with Advocate Health and Hospitals Corporation, practicing in Oak Lawn, Illinois. 345 Medicare patients in 2024, $94,824 paid; nearly all of their 374 Part D prescriptions were generic (94%). Phathom Pharmaceuticals, Inc. reported $109.20 in payments in 2025, mostly food and beverage. Lists Advocate Good Samaritan Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1346260817 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 20, 2006 |
| Last updated in NPPES | Mar 20, 2025 |
| Certified by provider | Mar 20, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036-110311 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 345 |
|---|---|
| Services billed | 1,039 across 14 procedure codes |
| Paid by Medicare | $94,824 |
Part D prescriptions in 2024
| Prescriptions (claims) | 374 · 420 30-day fills |
|---|---|
| Patients | 168 |
| Total drug cost | $12,765 |
| Generic share | 94% of claims |
Education and affiliations
| Graduation year | 1996 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Advocate Health and Hospitals CorporationChicago, IL · 3,118 clinicians
Hospital affiliations
- Advocate Good Samaritan HospitalDowners Grove, IL
- Advocate Illinois Masonic Medical CenterChicago, IL
Other facilities
- Advocate HospiceHospice · Oak Brook, IL
Industry payments (Open Payments)
- 2025$109.20 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Phathom Pharmaceuticals, Inc. | $109.20 | 1 |
What the 2025 payments were for
- Food and Beverage$109.20 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Oak Lawn
- 1003076795
- 1003143231
- 1053790139
- 1063412062
- 1073537643
- 1215125927
- 1225269053
- 1245369685
- 1275517211
- 1275719106
- 1306208418
- 1376171199
All 194 internal medicine physicians in Oak Lawn · All internal medicine physicians in Illinois